Cluster methods for strongly correlated electron systems

被引：78

作者：

Biroli, G ^{[1
]}

Kotliar, G ^{[1
]}

机构：

[1] Rutgers State Univ, Dept Phys & Astron, Ctr Mat Theory, Piscataway, NJ 08854 USA

来源：

PHYSICAL REVIEW B | 2002年 / 65卷 / 15期

关键词：

D O I：

10.1103/PhysRevB.65.155112

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We develop, clarify, and test various aspects of cluster dynamical mean field methods using a soluble toy model as a benchmark. We find that the cellular dynamical mean field theory (CDMFT) converges very rapidly and compare its convergence properties with those of the dynamical cluster approximation. We propose and test improved estimators for the lattice self-energy within CDMFT.

引用

页码：1 / 5

页数：5

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